Several big league veterans played in the contest, batting each inning to get in extra work. Shin-Soo Choo led off for Texas each of the first five frames and went 3-for-5 against Iwakuma.
"I felt good overall out there," Iwakuma said through translator Antony Suzuki. "It was different to face Choo each inning, but also good to face a Major League hitter in the game. I had a good feel with the split, it is starting to dive a lot. I feel like I could start the season right now physically, it's just all mental from here out."
Iwakuma could start three more games this spring before the Mariners open regular-season play April 6 in Seattle against the Angels. He's thrown in two Cactus League games to date and is yet to allow a run in six innings.
Robinson Cano, Austin Jackson and Justin Ruggiano each recorded several at-bats in the Triple-A and Double-A games Monday at the Peoria Complex. Jesus Montero hit a two-run homer for the Triple-A club, while Danny Hultzen tossed two innings while starting the Double-A game and allowed one home run while striking out four.
Greg Johns is a reporter for MLB.com. Follow him on Twitter @GregJohnsMLB as well as his Mariners Musings blog. This story was not subject to the approval of Major League Baseball or its clubs.